CN112704864B

CN112704864B - Athlete ejection device for ice and snow sports

Info

Publication number: CN112704864B
Application number: CN202011455363.6A
Authority: CN
Inventors: 谢金鑫; 张建伟; 李玉秋; 穆东波; 崔春; 董国强
Original assignee: Beijing Aerospace Yisen Wind Tunnel Engineering Technology Co ltd
Current assignee: Beijing Aerospace Yisen Wind Tunnel Engineering Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2022-04-08
Anticipated expiration: 2040-12-10
Also published as: CN112704864A

Abstract

The invention discloses an athlete ejection device for ice and snow sports, which comprises a driving motor, an energy accumulator, a steering wheel, a driving wheel, an adjusting wheel, a traction rope, a pulley, a laser velocimeter, a locking and releasing mechanism, a buffer, an athlete push frame, a movable support and a measurement control system. Two guide rails are installed to the upper strata symmetry of moving movable support, directive wheel and drive wheel respectively fixed mounting at moving movable support's both ends, drive motor and being connected of drive wheel, the coaster is on two guide rails via the pulley suspension of its both sides, the haulage rope both ends are connected respectively at the coaster both ends, and form a closed loop around directive wheel and drive wheel, in the below of guide rail, a plurality of regulating wheels interval ground range sets up the lower floor at moving movable support, sportsman pushes away a detachably and installs on the coaster, and stretch out side at moving movable support with the mode of cantilever beam. The invention can provide a certain initial speed for athletes engaged in ice and snow sports, help the athletes save physical strength and improve training efficiency.

Description

Athlete ejection device for ice and snow sports

Technical Field

The invention relates to an electric ejection device, which is mainly used for assisting ejection of athletes in ice and snow sports and the like, and belongs to the technical field of sports training equipment design.

Background

In the ice and snow sports, such as speed skating, the curve technology is a very important and difficult technical link, the curve technology plays a very important role in improving the performance of athletes, and the athletes need to carry out special training on the curve technology. However, in the previous curve training process, the athlete needs to accelerate from 0 speed on the straight road to ensure that the required curve entering speed is reached before entering the curve, and the acceleration movement on the straight road consumes a large amount of physical strength and time of the athlete, so that the special curve training efficiency is not high. For example, in free skiing air skill projects, athletes need to slide down a high-aid landslide of more than ten meters, jump on a diving platform after reaching a preset speed, and show various technical actions in the air. In the past training, the requirements of the sports project on a training field are very strict, a landslide-assisting and snow field meeting the standard needs to be built, the number of the snow fields meeting the standard in China is very limited, and the training time of athletes cannot be guaranteed due to the scarcity of field resources.

If can use the jettison device to daily training in, can save sportsman's physical power and single training time for the sportsman, improve training efficiency and training quality, also can reduce the influence of place restriction to the training.

Disclosure of Invention

The invention provides an ejection device for an athlete in ice and snow sports, which can be applied to sports (such as roller skating, speed skating, skiing and the like) on a smooth and flat field (such as an ice rink, a ski field and the like) and can eject the athlete out at a certain speed within a certain distance on the field.

The athlete ejection device for ice and snow sports comprises a driving motor, an energy accumulator, a steering wheel, a driving wheel, a regulating wheel, a traction rope, a pulley, a laser velocimeter, a locking and releasing mechanism, a buffer, an athlete push frame, a movable support and a measurement control system; the upper layer of the movable support is symmetrically provided with two guide rails, the steering wheel and the driving wheel are respectively and fixedly arranged at two end parts of the movable support, the driving wheel is connected with the driving motor, the energy accumulator is connected with the driving motor, the pulley is suspended on the two guide rails through pulleys at two sides of the pulley, the rear end of the pulley is connected with the locking and releasing mechanism, the laser velocimeter is arranged in the middle of the guide rails, the buffer is arranged at the front end of the guide rails, two ends of the traction rope are respectively connected at two ends of the pulley and form a closed loop around the steering wheel and the driving wheel, a plurality of regulating wheels are arranged at the lower layer of the movable support at intervals under the guide rails and used for regulating the tightness state of the traction rope, the push frame of the athlete is detachably arranged on the pulley and extends out of the side part of the movable support in a cantilever beam manner, the force transmission component is used for contacting with an athlete standing on the snow, and is a force transmission component between the whole device and the athlete.

Preferably, the device further comprises a measurement control system, the adjusting wheel comprises a sliding wheel, a pressure sensor and a spiral elevator, tension sensors are installed on the traction rope, and the measurement control system controls the spiral elevator to adjust the tightness of the traction rope according to data of the pressure sensors and data of the tension sensors and controls the driving motor to operate.

Preferably, the athlete pushing frame structure can be automatically adjusted according to the height and the sports type of the athlete.

Preferably, the number of the traction ropes is three, each traction rope is provided with a tension sensor, and the tension sensors are connected to a measurement control system and can display the tension value of each traction rope in real time.

Preferably, five groups of the adjusting wheels are arranged in the movement direction of the pulley at certain intervals, and are fixedly installed on the movable support and positioned below the traction rope.

Preferably, the movable support is designed in a segmented modular mode, universal wheels and fixed support legs are arranged below the movable support, the universal wheels can meet the requirement for moving the whole device, and the fixed support legs are designed adaptively according to the use places such as a snow field and an ice field, so that the fixed requirement of the ground of the place is met.

Compared with the prior art, the invention has the following advantages:

(1) the push frame for the athlete can be automatically adjusted in various structural forms, combines the ejection technology with the athlete, and is suitable for various sports;

(2) the tightness degree of the traction rope can be fully automatically adjusted, the work of checking and maintaining is omitted, and the operation safety of the whole system is improved.

(3) The whole device is convenient to move and disassemble and can meet the use requirements of different types of sites.

Drawings

Fig. 1 is a schematic diagram of the construction of the ejector of the present invention;

fig. 2 is a structural layout of the ejector of the present invention;

fig. 3 is a cross-sectional end view of a carriage of the ejector of the present invention;

fig. 4 is a schematic structural diagram of an adjusting wheel of the ejection device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The direction of the arrow in fig. 2 is the ejection direction, and the ejection direction of the player is taken as the front direction in the present invention.

As shown in fig. 1, 2, 3 and 4, the ejection device of the invention comprises a driving wheel 1, a traction rope 2, a pulley 3, a tension sensor 4, an adjusting wheel 5, a steering wheel 6, a driving motor 7, an energy accumulator 8, a locking and releasing mechanism 9, a player pushing frame 10, a training ground 11, a laser velocimeter 12, a buffer 13, a moving bracket 14, a guide rail 15, a sliding wheel 16, a pressure sensor 17, a spiral elevator 18 and the like.

Drive wheel 1 and directive wheel 6 are fixed mounting respectively at the both ends of moving movable support 14, and haulage rope 2 forms a ring around drive wheel 1 and directive wheel 6, installs tension sensor 4 on the haulage rope 2, and tension sensor 4 can remove along with haulage rope 2, realizes 2 tensile real-time supervision of haulage rope. Two ends of the traction rope 2 are respectively connected to the front and rear interfaces of the pulley 3. The guide rails 15 are symmetrically arranged on the upper layer of the movable support 14 to provide guidance for the movement of the trolley 3, the trolley 3 is arranged between the guide rails 15, and the trolley 3 can only move back and forth along the guide rails 15. The rear end of the pulley 3 is connected with a locking and releasing mechanism 9, and the locking and releasing mechanism 9 is used for limiting or releasing the pulley 3. The laser velocimeter 12 is arranged in the middle of the guide rail 15, the buffer 13 is arranged at the front end of the guide rail 15, and the buffer 13 is used for carrying out emergency braking buffering on the tackle 15 in an unexpected state so as to ensure the system safety. The athlete pushing frame 10 is arranged on the upper surface of the pulley 3, and the structural form of the athlete pushing frame can be automatically adjusted according to different athlete feelings and different sport types when in use. The adjusting wheel 5 is installed on the lower layer of the movable support 14, the adjusting wheel 5 is arranged as shown in fig. 1, the adjusting wheel 5 comprises a sliding wheel 16, a pressure sensor 17 and a spiral elevator 18, the spiral elevator 18 can control the sliding wheel 16 to move up and down, the tightness state of the traction rope 2 can be adjusted, and the pressure sensor 17 can monitor the acting force of the traction rope 2 on the adjusting wheel 5 in real time. The driving motor 7 is connected with the driving wheel 1, the driving motor 7 provides output rotating speed and torque to drive the driving wheel 1 to rotate, and the traction rope 2 and the pulley 3 are driven to move and synchronously move with the driving wheel 1 due to the friction force between the traction rope 2 and the driving wheel 1. The energy accumulator 8 is connected with the driving motor 7, the energy accumulator 8 is used for absorbing the back electromotive force generated by the deceleration of the motor, and the back electromotive force is stored and dissipated through the energy accumulator 8 during braking.

When the whole device is used, the friction force between the traction rope 2 and the driving wheel 1 needs to be kept at a certain value, so that the tightness state of the traction rope 2 needs to be ensured not to change. The numerical values collected by the tension sensor 4 on the traction rope 2 and the pressure sensor 17 on the adjusting wheel 5 jointly judge the tightness state of the traction rope 2 at the moment, and after the numerical values of the tension sensor 4 and the pressure sensor 17 deviate from the preset value, the measurement control system controls the spiral elevator 18 in the adjusting wheel 5 to ascend or descend, so that the traction rope 2 can be tensioned to the preset state again.

The device comprises the following use steps:

firstly, setting parameters such as ejection speed and the like in a measurement control system;

secondly, the athlete stands in front of the athlete pushing frame 10 and makes a corresponding starting posture according to different training project requirements;

thirdly, starting a driving motor 7, and pre-tightening the traction rope 2 with the pulley 3 under the action of driving force;

fourthly, the locking and releasing mechanism 9 is opened, the driving motor 7 is rapidly started and drives the driving wheel 1 to rotate, the driving wheel 1 drives the traction rope 2 and the pulley 3 on the traction rope 2 to move in an accelerated way, and the pulley 3 drives the athlete push frame 10 and the athlete to accelerate together;

and fifthly, when the required exercise speed of the training is reached, the driving motor 7 is rapidly decelerated to generate reverse electromotive force and store the reverse electromotive force in the energy accumulator 8, the driving wheel 1 is rapidly decelerated and drives the pulley 3 to decelerate and brake, the athlete continuously advances into the training field under the action of inertia, and the ejection process of the athlete is finished.

And sixthly, resetting the system by the ejection device, and preparing for next ejection after resetting is completed.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.

Claims

1. An athlete ejection device for ice and snow sports, which is characterized in that: the device comprises a driving motor, an energy accumulator, a steering wheel, a driving wheel, an adjusting wheel, a traction rope, a pulley, a laser velocimeter, a locking and releasing mechanism, a buffer, a sportsman push frame, a movable support and a measurement control system; the upper layer of the movable support is symmetrically provided with two guide rails, the steering wheel and the driving wheel are respectively and fixedly arranged at two end parts of the movable support, the driving wheel is connected with the driving motor, the energy accumulator is connected with the driving motor, the pulley is suspended on the two guide rails through pulleys at two sides of the pulley, the rear end of the pulley is connected with the locking and releasing mechanism, the laser velocimeter is arranged in the middle of the guide rails, the buffer is arranged at the front end of the guide rails, two ends of the traction rope are respectively connected at two ends of the pulley and form a closed loop around the steering wheel and the driving wheel, a plurality of adjusting wheels are arranged at the lower layer of the movable support at intervals under the guide rails and used for adjusting the tightness state of the traction rope, the athlete push frame is detachably arranged on the pulley and extends out of the side part of the movable support in a cantilever beam manner, the force transmission component is used for contacting with an athlete standing on the snow, and is a force transmission component between the whole device and the athlete;

the measuring and controlling system controls the spiral elevator to adjust the tightness state of the traction rope according to data of the pressure sensors and the tension sensors and controls the driving motor to operate;

the three traction ropes are provided, each traction rope is provided with a tension sensor, and the tension sensors are connected to a measurement control system and can display the tension value of each traction rope in real time.

2. An athlete ejection device for ice and snow sports, according to claim 1, wherein: the athlete pushing frame structure can be automatically adjusted according to the height and the motion type of the athlete.

3. An athlete ejection device for ice and snow sports, according to claim 1, wherein: five groups of adjusting wheels are arranged in the movement direction of the pulley at certain intervals, and are fixedly installed on the movable support and positioned below the traction rope.

4. An athlete ejection device for ice and snow sports, according to claim 1, wherein: the movable support adopts a segmented modular design, universal wheels and fixed support legs are arranged below the movable support, the universal wheels can meet the requirement for moving the whole device, and the fixed support legs are designed adaptively according to the use site of a snow field and an ice rink, so that the fixed requirement of the ground of the site is met.